CN106011490B - Vanadium solution dephosphorization process and its system in a kind of vanadium slag production vanadic anhydride - Google Patents
Vanadium solution dephosphorization process and its system in a kind of vanadium slag production vanadic anhydride Download PDFInfo
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- CN106011490B CN106011490B CN201610346197.3A CN201610346197A CN106011490B CN 106011490 B CN106011490 B CN 106011490B CN 201610346197 A CN201610346197 A CN 201610346197A CN 106011490 B CN106011490 B CN 106011490B
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
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- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
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- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
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- C22B34/22—Obtaining vanadium
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Abstract
Vanadium solution dephosphorization process and its system in a kind of vanadium slag production vanadic anhydride, the dephosphorization system include dephosphorization agent storage tank, dephosphorization agent high position measuring tank, charge car, primary concentration machine, secondary concentration machine, infusion pump and vacuum filtration pump.Technique is：Clinker after vanadium slag is calcined is loaded in charge car, leach clinker, leachate is pumped into primary concentration machine by vacuum filtration, with clinker in dephosphorization agent elution charge car in dephosphorization agent storage tank, carry out a dephosphorization, continue to use water wash, the continuous overflow of leachate enters in secondary concentration machine in primary concentration machine, steam-stirring solution is passed through to secondary concentration machine, dephosphorization agent is delivered in dephosphorization agent high position measuring tank by infusion pump, dephosphorization agent is delivered in secondary concentration machine, carries out secondary dephosphorization, secondary concentration machine is static, after clarification, obtains qualified vanadium solution.Advantage is：Utilization rate of equipment and installations is high, and rational in infrastructure, easy to operate, dephosphorization agent dosage is few, and dephosphorization process generation waste residue amount is small, and vanadium recovery is high.
Description
Technical field
The invention belongs to vanadium slag to roast leaching and vanadium extraction process field, vanadium solution in more particularly to a kind of vanadium slag production vanadic anhydride
Dephosphorization process and its system.
Background technology
Vanadium titano-magnetite is the essential mineral resource of vanadium, and vanadium titano-magnetite aoxidizes through blast furnace process into vanadium-bearing hot metal, converter
Blowing, vanadium obtain vanadium slag after enrichment into slag phase.Smelt the vanadium slag phosphorus content after vanadium titano-magnetite for 0.020~
0.30%, when vanadium slag aoxidizes sodium vanadium-extracting roasting ripe material, a large amount of phosphorus are converted into water-soluble phosphate, and clinker directly uses water logging
Rear vanadium solution is taken to contain a large amount of phosphonium ions.To ensure that phosphorus content is qualified (≤0.05%) in vanadic anhydride product, generally to vanadium
Solution takes objectionable impurities phosphorus in purification method removing solution.
At present, domestic Leaching of Vanadium from Vanadium slag enterprise generally selects easy agitator tank dephosphorization mode, i.e. vanadium solution is directly conveyed into
In agitator tank, dephosphorization agent calcium chloride or magnesium chloride dephosphorization are added into agitator tank.But the dephosphorization mode has as a drawback that：
(1) dephosphorization agent dosage is big, and dephosphorization efficiency is relatively low；(2) vanadium loss is big, the rate of recovery is low, because a large amount of dephosphorization agents of the method are not filled
Point utilize, in dephosphorization agent and solution vanadium reaction be converted into calcium vanadate not soluble in water into (vanadium 8~14% is contained) in waste residue, cause vanadium
It is a large amount of to be lost in；(3) utilization rate of equipment and installations is low, and it is larger to take up an area face, need to set the dephosphorization equipments such as independent agitator tank during dephosphorization, abundant profit
With each equipment such as the thickener in existing vanadium extracting process, charge car；(4) dephosphorization process generation waste residue amount is larger, the oxidation of ton five two
Vanadium produces 200~350kg of the quantity of slag, pollutes environment.
The content of the invention
Simple to operate, vanadium returns during producing vanadic anhydride the technical problem to be solved in the present invention is to provide a kind of vanadium slag
The few vanadium solution dephosphorization process of high income, dephosphorization waste residue amount and its system, to realize quick dephosphorization, dephosphorization efficiency is improved, is reduced
Dephosphorization agent consumes, and vanadium loses during avoiding dephosphorization, improves vanadium recovery, reduces dephosphorization waste residue amount.
The technology of the present invention solution is：
Vanadium solution dephosphorization process in a kind of vanadium slag production vanadic anhydride, is comprised the following steps that：
(1) clinker after vanadium slag is calcined is loaded in charge car, and unlatching really filters empty pump, with 50~80 DEG C of water wash, leaching
10~20min of clinker is taken, leachate is pumped into primary concentration machine by vacuum filtration, valve b is opened, with dephosphorization agent storage tank
In 100~160g/L calcium chloride or 100~160g/L calcium nitrate dephosphorization agent elution charge car in 0~10min of clinker, carry out one
Secondary dephosphorization, analysis detection primary concentration machine in leachate it is phosphorous≤0.04g/L after, close valve b, continue with water wash, leaching
Clinker, in primary concentration machine the continuous overflow of leachate enter in secondary concentration machine；
(2) solution 21~30g/L containing vanadium in analysis detection secondary concentration machine, stops elution, steaming is passed through to secondary concentration machine
Vapour agitating solution, 100~160g/L calcium chloride or 100~160g/L calcium nitrate dephosphorization agents are delivered to by dephosphorization by infusion pump
In agent high position measuring tank, valve c is opened, 100~160g/L calcium chloride or 100~160g/L calcium nitrate dephosphorization agents are delivered to
In secondary concentration machine, secondary dephosphorization is carried out, makes calcium chloride or calcium nitrate dephosphorization agent and foreign matter of phosphor ionic reaction in solution, analysis
Detect secondary concentration machine it is phosphorous≤0.02g/L after, close valve c and stop steam and be passed through；
(3) secondary concentration machine it is static, clarification after, open valve d, using qualified vanadium solution as precipitate ammonium poly-vanadate stoste make
With the dephosphorization slurry collecting of primary concentration machine and secondary concentration motor spindle and press filtration.
Further, during leaching clinker, leachate is sent into primary concentration machine when containing 21~30g/L of vanadium.
Further, during steam-stirring solution, it is 60~80 DEG C to control solution temperature.
Further, the mass ratio of phosphorus content is 0.5 in the calcium content and clinker described in step (1) in dephosphorization agent:1~
3.0:1。
Further, the calcium content described in step (2) in dephosphorization agent and phosphorus content in leachate in primary concentration machine
Mass ratio is 2.5:1~5.0:1.
Vanadium solution dephosphorization system in a kind of vanadium slag production vanadic anhydride, has dephosphorization agent storage tank, it is characterized in that：
The dephosphorization agent storage tank is connected by pipeline with dephosphorization agent high position measuring tank, dephosphorization agent storage tank and dephosphorization agent high position measuring tank it
Between pipeline be provided with infusion pump, dephosphorization agent high position measuring tank inlet duct is provided with valve a, and the dephosphorization agent storage tank passes through pipeline
It is connected with charge car and valve b is provided with pipeline, the charge car is connected by pipeline with primary concentration machine, in cloth
Pipeline between car and primary concentration machine is provided with vacuum filtration pump, the primary concentration machine top overflow outlet and secondary concentration
Machine vanadium solution entrance is connected by pipeline, and the secondary concentration machine dephosphorization agent entrance passes through with the outlet of dephosphorization agent high position measuring tank
Pipeline is connected and is provided with valve c on pipeline.
Further, the dephosphorization agent entrance of the charge car is provided with water-locator I, makes dephosphorization agent more dispersed, is uniformly added into, keeps away
Exempt from that dephosphorization agent partial accession amount is excessive, forms a large amount of calcium vanadates not soluble in water causes vanadium to lose, influence vanadium recovery.
Further, the dephosphorization agent entrance of the secondary concentration machine is provided with water-locator II, makes dephosphorization agent more dispersed, uniformly adds
Enter, avoid dephosphorization agent partial accession amount is excessive, forms a large amount of calcium vanadates not soluble in water from causing vanadium to lose, influence vanadium recovery.
Beneficial effect of the present invention：
(1) utilization rate of equipment and installations is high, rational in infrastructure, easy to operate.
The equipment dephosphorization such as each thickener (the static clarification of working solution) in existing vanadium extracting process, charge car are made full use of,
Break traditions the inertial thinking for thinking that thickener, charge car are unable to dephosphorization, is not required to increase special dephosphorization mixing plant newly, reduces equipment
Floor space, improve vanadium extraction utilization rate of equipment and installations.
(2) quick dephosphorization, vanadium recovery are high.
Using the dephosphorization twice of charge car, thickener, phosphor-removing effect is good, and the dephosphorization time is short, and dephosphorization efficiency improves, charge car one
Before secondary dephosphorization, dephosphorization agent is added after liquid elution clinker is first washed with water, avoids being directly added into dephosphorization agent and causes vanadium to lose, reduce dephosphorization
Process vanadium loss 3~10%.The secondary dephosphorization of secondary concentration machine, dephosphorization speed is fast, the time is short, while vanadium solution static clarification
Secondary dephosphorization is completed, shortens the production time, improves yield.
(3) dephosphorization agent dosage is few, and it is small that dephosphorization process produces waste residue amount
Dephosphorization agent dosage is few, utilization rate is high, and dephosphorization formation calcium vanadate is few, and waste residue yield is small, reduces environmental pollution.
Brief description of the drawings
Fig. 1 is the process flow diagram of the present invention.
In figure：1- dephosphorization agent storage tanks, 2- dephosphorization agent high position measuring tanks, 3- charge cars, 4- primary concentration machines, 5- secondary concentrations
Machine, 6- infusion pumps, 7- vacuum filtration pumps, 8- water-locators I, 9- water-locators II.
Embodiment
Embodiment 1
As illustrated, vanadium solution dephosphorization process system in vanadium slag production vanadic anhydride, has dephosphorization agent storage tank 1, institute
State dephosphorization agent storage tank 1 by pipeline with dephosphorization agent high position measuring tank 2 to be connected, in dephosphorization agent storage tank 1 and dephosphorization agent high position measuring tank 2
Between pipeline be provided with infusion pump 6, the inlet duct of dephosphorization agent high position measuring tank 2 is provided with valve a, and the dephosphorization agent storage tank 1 is logical
Piping is connected with charge car 3 and valve b is provided with pipeline, and the charge car 3 is connected by pipeline with primary concentration machine 4
It is logical, vacuum filtration pump 7, the top overflow of primary concentration machine 4 are provided with the pipeline between charge car 3 and primary concentration machine 4
Outlet is connected with the vanadium solution entrance of secondary concentration machine 5 by pipeline, and the dephosphorization agent entrance of secondary concentration machine 5 is high with dephosphorization agent
Position measuring tank 2 exports is connected and is provided with pipeline valve c by pipeline；
The dephosphorization agent entrance of the charge car 3 is provided with water-locator I 8, and the dephosphorization agent entrance of the secondary concentration machine 5 is provided with cloth
Hydrophone II 9, make dephosphorization agent more dispersed, be uniformly added into, avoid that dephosphorization agent partial accession amount is excessive, forms a large amount of vanadic acid not soluble in water
Calcium causes vanadium to lose, and influences vanadium recovery.
Vanadium solution dephosphorization process is as follows in vanadium slag production vanadic anhydride：Before this process system starts, each valve, which is in, to close
Closed state；
(1) clinker (phosphorous 0.03wt%) after vanadium slag is calcined is loaded in charge car 3, vacuum filtration pump 7 is opened, with 50
DEG C water wash, leaching clinker 10min, obtain the leachates of 21g/L containing vanadium, and to be transported to one-level dense by being filtered by vacuum pump 7 for leachate
Contracting machine 4, in analysis detection primary concentration machine 4 after the phosphorous 0.04g/L of solution, continue with water wash, leaching clinker, primary concentration machine
The continuous overflow of solution enters in secondary concentration machine 5 in 4；
(2) 21g/L containing vanadium of analysis detection secondary concentration machine 5, stops elution, and being passed through steam-stirring to secondary concentration machine mixes
Solution, solution temperature are controlled at 60~80 DEG C, and 100g/L calcium chloride solutions are delivered into the high-order metering of dephosphorization agent by infusion pump 6
In tank 2, valve c is opened, calcium chloride solution is delivered in secondary concentration machine 5, calcium in primary concentration machine with leaching in calcium chloride
Liquid phosphorus mass ratio is 3.0:1, secondary dephosphorization is directly carried out, makes calcium chloride and foreign matter of phosphor ionic reaction in solution, analysis detection two
After 5 phosphorous 0.02g/L of level thickener, stopping is passed through steam, closes valve c；
(3) secondary concentration machine 5 it is static, clarification after, open valve d, obtain vanadium solution (index is as shown in table 1), will be qualified
Vanadium solution uses as precipitation ammonium poly-vanadate stoste, by primary concentration machine 4 and the dephosphorization slurry collecting of the bottom of secondary concentration machine 5 simultaneously
Press filtration, caused dephosphorization slag (containing vanadium 3.5%) recovery.
Embodiment 2
Vanadium solution dephosphorization process system is the same as embodiment 1 in vanadium slag production vanadic anhydride.
Vanadium solution dephosphorization process is as follows in vanadium slag production vanadic anhydride：Before this process system starts, each valve, which is in, to close
Closed state；
(1) clinker (phosphorous 0.18wt%) after vanadium slag is calcined is loaded in charge car 3, vacuum filtration pump 7 is opened, with 80
DEG C water wash, leaching clinker 20min, obtain the leachates of 30g/L containing vanadium, and to be transported to one-level dense by being filtered by vacuum pump 7 for leachate
In contracting machine 4, valve b is opened, with clinker 10min, chlorination in 160g/L calcium chloride solutions elution charge car 3 in dephosphorization agent storage tank 1
Calcium and clinker phosphorus mass ratio are 0.5 in calcium solution:1 carries out a dephosphorization, and solution is phosphorous in analysis detection primary concentration machine
After 0.035g/L, close valve b, continue with water wash, leaching clinker, in primary concentration machine 4 the continuous overflow of solution enter two level
In thickener 5；
(2) 30g/L containing vanadium of analysis detection secondary concentration machine 5, stop elution and be passed through steam-stirring mixing to secondary concentration machine 5
Solution, solution temperature are controlled at 60~80 DEG C, and 160g/L calcium chloride solutions are delivered into the high-order metering of dephosphorization agent by infusion pump 6
In tank 2, valve c is opened, calcium chloride solution is delivered in secondary concentration machine 5, calcium in primary concentration machine with leaching in calcium chloride
Liquid phosphorus mass ratio is 5.0:1, secondary dephosphorization is carried out, makes calcium chloride and foreign matter of phosphor ionic reaction in solution, analysis detection two level
After the phosphorous 0.018g/L of thickener, stopping is passed through steam, closes valve c；
(3) secondary concentration machine 5 it is static, clarification after, open valve d, obtain vanadium solution (index is as shown in table 1), will be qualified
Vanadium solution uses as precipitation ammonium poly-vanadate stoste, by primary concentration machine 4 and the dephosphorization slurry collecting of the bottom of secondary concentration machine 5 simultaneously
Press filtration, caused dephosphorization slag (containing vanadium 3.3%) recovery.
Embodiment 3
Vanadium solution dephosphorization process system is the same as embodiment 1 in vanadium slag production vanadic anhydride.
Vanadium solution dephosphorization process is as follows in vanadium slag production vanadic anhydride：Before this process system starts, each valve, which is in, to close
Closed state；
(1) clinker (phosphorous 0.0wt9%) after vanadium slag is calcined is loaded in charge car 3, vacuum filtration pump 7 is opened, with 60
DEG C water wash, leaching clinker 12min, obtain the leachates of 23g/L containing vanadium, and to be transported to one-level dense by being filtered by vacuum pump 7 for leachate
In contracting machine 4, valve b is opened, with clinker 6min, calcium nitrate in 120g/L calcium nitrate solutions elution charge car 3 in dephosphorization agent storage tank 1
Middle calcium is 3.0 with clinker phosphorus mass ratio:1 carries out a dephosphorization, and analysis detects the phosphorous 0.031g/L of leachate in primary concentration machine
Afterwards, close valve b, continue with water wash, leaching clinker, in primary concentration machine 4 the continuous overflow of solution enter secondary concentration machine 5
In；
(2) analysis detection secondary concentration machine 23g/L containing vanadium, stops elution, and being passed through steam-stirring to secondary concentration machine 5 mixes
Solution, solution temperature are controlled at 60~80 DEG C, and 120g/L calcium nitrate solutions are delivered into the high-order metering of dephosphorization agent by infusion pump 6
In tank 2, valve c is opened, calcium nitrate solution is delivered in secondary concentration machine 5, calcium in primary concentration machine with leaching in calcium nitrate
Liquid phosphorus mass ratio is 2.5:1, secondary dephosphorization is carried out, makes calcium nitrate and foreign matter of phosphor ionic reaction in solution, analysis detection two level
After 5 phosphorous 0.014g/L of thickener, stopping is passed through steam, closes valve c；
(3) secondary concentration machine 5 it is static, clarification after, open valve d, obtain vanadium solution (index is as shown in table 1), will be qualified
Vanadium solution uses as precipitation ammonium poly-vanadate stoste, by primary concentration machine 4 and the dephosphorization slurry collecting in the underflow portion of secondary concentration machine 5
And press filtration, caused dephosphorization slag (containing vanadium 3.8%) recovery.
Embodiment 4
Vanadium solution dephosphorization process system is the same as embodiment 1 in vanadium slag production vanadic anhydride.
Vanadium solution dephosphorization process is as follows in vanadium slag production vanadic anhydride：Before this process system starts, each valve, which is in, to close
Closed state；
(1) clinker (phosphorous 0.13wt%) after vanadium slag is calcined is loaded in charge car 3, vacuum filtration pump 7 is opened, with 75
DEG C water wash, leaching clinker 13min, obtain the leachates of 23g/L containing vanadium, and to be transported to one-level dense by being filtered by vacuum pump 7 for leachate
In contracting machine 4, valve b is opened, with clinker 4min, calcium chloride in 100g/L calcium chloride solutions elution charge car 3 in dephosphorization agent storage tank 1
Middle calcium is 0.7 with clinker phosphorus mass ratio:1 carries out a dephosphorization, and analysis is detected in primary concentration machine after the phosphorous 0.025g/L of solution,
Close valve b, continue with water wash, leaching clinker, in primary concentration machine 4 the continuous overflow of solution enter in secondary concentration machine 5；
(2) 23g/L containing vanadium of analysis detection secondary concentration machine 5, stops elution, steam-stirring mixed solution is passed through to secondary concentration machine 5, molten
130g/L calcium chloride solutions are delivered in dephosphorization agent high position measuring tank 2 by liquid temperature control at 60~80 DEG C, by infusion pump 6,
Valve c is opened, calcium chloride solution is delivered in secondary concentration machine 5, calcium and leachate phosphorus matter in primary concentration machine in calcium chloride
Amount is than being 4.0:1, secondary dephosphorization is carried out, makes calcium chloride and foreign matter of phosphor ionic reaction in solution, analysis detection secondary concentration machine contains
After phosphorus 0.011g/L, stopping is passed through steam, closes valve c；
(3) secondary concentration machine 5 it is static, clarification after, open valve d, obtain vanadium solution (index is as shown in table 1), will be qualified
Vanadium solution uses as precipitation ammonium poly-vanadate stoste, by primary concentration machine 4 and the dephosphorization slurry collecting of the bottom of secondary concentration machine 5 simultaneously
Press filtration, caused dephosphorization slag (containing vanadium 2.1%) recovery.
Comparative example 1
Clinker (phosphorous 0.13wt%) after vanadium slag is calcined is loaded in charge car, opens vavuum pump, with 75 DEG C of water wash,
Clinker 13min is leached, analyzes leachate 23g/L containing vanadium, is pumped into by transfusion in dephosphorization agitator tank, by 130g/L calcium chloride
Solution is delivered in dephosphorization agitator tank, and dephosphorization agent calcium is 4.0 with leachate phosphorus mass ratio:1 carries out dephosphorization, makes calcium chloride and solution
Middle foreign matter of phosphor ionic reaction, analysis are detected in dephosphorization agitator tank after the phosphorous 0.011g/L of leachate, and dephosphorization filter pressing produces
Dephosphorization slag (containing vanadium 13.2%).
Qualified vanadium solution index contrast table in the vanadium slag of table 1 production vanadic anhydride
Vanadium solution dephosphorization index contrast table in the vanadium slag of table 2 production vanadic anhydride
| Index | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 |
| Dephosphorization slag contains vanadium, wt% | 3.5 | 3.3 | 3.8 | 2.1 | 13.2 |
The specific embodiment of the present invention is these are only, is not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (8)
1. vanadium solution dephosphorization system in a kind of vanadium slag production vanadic anhydride, has dephosphorization agent storage tank, it is characterized in that：The dephosphorization
Agent storage tank is connected by pipeline with dephosphorization agent high position measuring tank, the pipeline between dephosphorization agent storage tank and dephosphorization agent high position measuring tank
Infusion pump is provided with, dephosphorization agent high position measuring tank inlet duct is provided with valve a, and dephosphorization agent outlet pipeline is provided with valve b, institute
State dephosphorization agent storage tank by pipeline with charge car to be connected and be provided with valve b on pipeline, the charge car passes through pipeline and one
Level thickener is connected, and vacuum filtration pump, the primary concentration machine are provided with the pipeline between charge car and primary concentration machine
Top overflow outlet is connected with the vanadium solution entrance of secondary concentration machine by pipeline, the dephosphorization agent entrance of the secondary concentration machine
Exported with dephosphorization agent high position measuring tank and be connected and be provided with pipeline valve c by pipeline.
2. vanadium solution dephosphorization system in vanadium slag production vanadic anhydride according to claim 1, it is characterized in that：The cloth
The dephosphorization agent entrance of car is provided with water-locator I.
3. vanadium solution dephosphorization system in vanadium slag production vanadic anhydride according to claim 1, it is characterized in that：The two level
The dephosphorization agent entrance of thickener is provided with water-locator II.
4. vanadium solution dephosphorization system is produced using vanadium slag in a kind of production vanadic anhydride using vanadium slag as claimed in claim 1
Vanadium solution dephosphorization process in vanadic anhydride, it is characterized in that：Comprise the following steps that：
（1）Vanadium solution dephosphorization system in vanadic anhydride is produced using vanadium slag, the clinker after vanadium slag is calcined is loaded in charge car,
Vacuum filtration pump is opened, with 50~80 DEG C of water wash, leaching 10~20min of clinker, leachate is pumped into by vacuum filtration
In primary concentration machine, valve b is opened, is removed with 100~160g/L calcium chloride in dephosphorization agent storage tank or 100~160g/L calcium nitrate
Phosphorus agent elution charge car in below clinker 10min, carry out a dephosphorization, analysis detection primary concentration machine in leachate it is phosphorous≤
After 0.04g/L, close valve b, continue with water wash, leaching clinker, in primary concentration machine the continuous overflow of leachate enter two level
In thickener；
（2）Solution 21~30g/L containing vanadium in analysis detection secondary concentration machine, stops elution, is passed through steam to secondary concentration machine and stirs
Solution is mixed, 100~160g/L calcium chloride or 100~160g/L calcium nitrate dephosphorization agents are delivered to by dephosphorization agent height by infusion pump
In the measuring tank of position, valve c is opened, 100~160g/L calcium chloride or 100~160g/L calcium nitrate dephosphorization agents are delivered to two level
In thickener, secondary dephosphorization is carried out, makes calcium chloride or calcium nitrate dephosphorization agent and foreign matter of phosphor ionic reaction in solution, analysis detection
Secondary concentration machine is phosphorous≤0.02g/L after, close valve c and stop steam and be passed through；
（3）Secondary concentration machine is static, after clarification, opens valve d, is used qualified vanadium solution as precipitation ammonium poly-vanadate stoste,
The dephosphorization slurry collecting of primary concentration machine and secondary concentration motor spindle and press filtration.
5. vanadium solution dephosphorization process in vanadium slag production vanadic anhydride according to claim 4, it is characterized in that：Leach clinker
During, leachate is sent into primary concentration machine when containing 21~30g/L of vanadium.
6. vanadium solution dephosphorization process in vanadium slag production vanadic anhydride according to claim 4, it is characterized in that：Steam-stirring
During solution, it is 60~80 DEG C to control solution temperature.
7. vanadium solution dephosphorization process in vanadium slag production vanadic anhydride according to claim 4, it is characterized in that：Step（1）
Described in calcium content and clinker in dephosphorization agent the mass ratio of phosphorus content be 0.5:1~3.0:1.
8. vanadium solution dephosphorization process in vanadium slag production vanadic anhydride according to claim 4, it is characterized in that：Step（2）
Described in the mass ratio of the calcium content in dephosphorization agent and phosphorus content in leachate in primary concentration machine be 2.5:1~5.0:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610346197.3A CN106011490B (en) | 2016-05-23 | 2016-05-23 | Vanadium solution dephosphorization process and its system in a kind of vanadium slag production vanadic anhydride |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610346197.3A CN106011490B (en) | 2016-05-23 | 2016-05-23 | Vanadium solution dephosphorization process and its system in a kind of vanadium slag production vanadic anhydride |
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| Publication Number | Publication Date |
|---|---|
| CN106011490A CN106011490A (en) | 2016-10-12 |
| CN106011490B true CN106011490B (en) | 2017-11-10 |
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